Adaptive Varying Modulus Blind Equalization Algorithm Based on Adjacent Signal
Zhang Yanpin · Journal of Henan University of Science & Technology · 2014
According to the drawback of high misadjustment at the prime of quadrature amplitude modulation(QAM)blind equalization based on constellation division,a modified adaptive varying modulus algorithm was put forward based on the analysis of adaptive varying modulus equalization algorithm. By equalising every constellation point,the new algorithm can take adjoining constellation point into account. In order to control the weight ratio of the two error functions dynamically,a new way is used to select weight factor. This algorithm can reduce the misadjustment and achieve a faster convergence rate. Different underwater acoustic channels simulation results prove the the superiority of the algorithm on the convergence rate.